Valve arrangement



LEWIS EIKENBERRY, OF PHILADELPHIA, PENNSYLVANIA.

VALVE ARRANGEMENT;

Specification of Letters Patent No. 32,055, dated April 16, 1861.

To all whom it may concern:

Be it known that I, LEWIS EIKENBERRY, of the city and county ofPhiladelphia and State of Pennsylvania, have invented a new and usefulImprovement for Governing Valves; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, forming a part of thisspecification, in which- Figure l, is a top view of the horizontal crankshaft of an engine with. my improvements applied to it. Fig. 2, is avertical central section of the same. F ig. 3, is a vertical transversesection in the line e, a, and Fig. Il, is a vertical transverse sectionin the line y, y.

Similar' letters of reference, in each of the several gures indicatecorresponding parts.

The nature of my invention consists 1st, in effecting'a connectionbetween the sliding diagonally set tubular shifter, crank shaft and theeccentric by means of an oblong slot cut through the tubular shifter,one or more guide pins projecting from the shaft through `the slot and afeather or key attached to the tubular shifter and working in a grooveformed in the eye of the eccentri It consists 2nd, in the combination ofa ball governor and spring with a slotted and diagonally set tubularshifter, shaft and the guide pins, substantially in the mannerhereinafter described.

To enable others, skilled in the art, to make and use my invention, Iwill proceed to describe its construction and operation.

A, represents the shaft of the engine; B, the crank; C, the eccentric;and D, a ball governor. t

The shaft has a short tubular shifter E, fitted loosely on it; saidtubular shifter being set on the shaft so as to have its sides rundiagonally or obliquely to the shaft and having a slot a, cut throughits circumference in order to allow one or more pins o, ZJ, whichproject out from the circumference of the shaft, to pass through it; Thepins o, o, serve to keep the eccentric from longitudinal movement on theshaft,

also to control the positionof the tubular shifter, and they likewisewill serve to give a slight turn to the tubular shifter and eccentricwhen the slot runs diagonally to the shaft, as will be hereinafterdescribed.

Over the tubular shifter E, the eccentric C, is fitted loosely and thensecured against rotary but not longitudinal motion by means of a feathero, which forms part of the tubular shifter and enters a groove in theeye of the eccentric. The eccentric thus secured, cannot turnindependently of the tubular shifter, and whenever the tubular shifterslides in the direction of the arrow, the center of the eccentric isbrought nearer to the shaft by reason of the tubular shifter settingoblique on the shaft, and consequently the length of the stroke impartedto the valve is decreased.

In order to have the tubular shifter under control, I have arranged aball governor D,

and a spring H, on the shaft A, and connected one end of the tubularshifter to the spring and the other end to the sliding col lar` cl, ofthe governor, thereby regulating the speed of the engine. And 'in orderto have it under the control of the engine when the governor is notused,I have attached a swiveling hand lever' I, to its opposite end.

If it is desirable to have the lead of the valve vary with the change inthe length of the stroke of the valve, the slot in the tubular shiftershould run parallel with the axis of the shaft, but if it is desiredalways to maintain the same. lead, then the slot should run suiiicientlyoblique to the shaft to turn the eccentric and tubular shifteras theyslide-together on the shaft to such an extent as to compensate for thechange or any part thereof which is caused in the lead by the adjustmentof the stroke.

My arrangement is exceedingly simple, and it obviates much of theinconvenience which is experienced with that arrangement of variableeccentric which requires a guide way or framing to keep the eccentric inplace during its adjustment.

What I claim as my invention and desire to secure by Letters Patent, is

l. Effecting a connection between the sliding diagonally settubularshifter E crank shaft A, and the eccentric C, by means ofan oblong slota Yout through the tubular as described, and a shztft, A, substantiallyas shfer, one or mpre guide pins b, Z), projectand for the purposes setforth. ing rom the sha t through the slot, substantally as and for thepurposes set forth. LEVIS EIKENBERRY 5 2. The Combination of a governorD, or Witnesses: a governor and spring With a diagonally set GOODWIN Y.ATLEE,

tubular shifter E constructed and operating G. F. Gr. DIETERICH.

